extensor retinaculum

(redirected from retinaculum musculorum extensorum)

ex·ten·sor ret·i·nac·u·lum

[TA]

a strong fibrous band formed as a thickening of the antebrachial deep fascia, stretching obliquely across the back of the wrist, attaching deeply to ridges on the dorsal aspect of the radius, triquetral, and pisiform bones, and binding down the extensor tendons of the fingers and thumb.

ex·ten·sor ret·i·nac·u·lum

(eks-ten'sŏr ret'i-nak'yū-lŭm) [TA]

A strong fibrous band formed as a thickening of the antebrachial deep fascia, stretching obliquely across the back of the wrist, attaching deeply to ridges on the dorsal aspect of the radius, triquetral and pisiform bones, binding down the extensor tendons of the fingers and thumb.

extensor

a muscle, contraction of which tends to straighten or dorsiflex a joint; the antagonist of a flexor

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